<template>
  <h2>当前求和为：{{sum}}</h2>
  <button @click="sum++">点我+1</button>
  <hr>
  <h2>当前点击时，鼠标的坐标为，x：{{point.x}}，y：{{point.y}}</h2>
</template>

<script>
import {ref} from 'vue'
import usePoint from "@/hooks/usePoint";
export default {
    name: "Demo",
    setup(){
      console.log("--------setup----------")
      //数据
      let sum=ref(0)

      let point=usePoint()

      //返回一个对象（常用）
      return{
          sum,
          point
      }
    },
}
</script>

<style scoped>

</style>
